Results 191 to 200 of about 2,661,724 (245)

Comparison of Ring Current Proton Losses Between Contributions From Scattering by Field Line Curvature and EMIC Waves

Journal of Geophysical Research: Space Physics, 2023
Although both the field line curvature (FLC) and electromagnetic ion cyclotron (EMIC) waves are recognized to contribute importantly to the loss of energetic protons in the Earth's ring current, their quantitative differences in scattering ring current ...
Xing Cao, B. Ni, Yiqun Yu, Long Ma, Peng Lu, Xiaoyu Wang   +5 more
semanticscholar   +1 more source

Compression-related EMIC waves drive relativistic electron precipitation

Science China Technological Sciences, 2014
With coordinated observations of the NOAA 15 satellite and OUL magnetometer station in Finland, we report that the electromagnetic ion cyclotron (EMIC) waves which were stimulated by the compression of the magnetosphere drive relativistic electron precipitation in geoquiescence on 1 Jan 2007.
DeDong Wang, ZhiGang Yuan, XiaoHua Deng, Meng Zhou, ShiYong Huang, Ming Li, HuiMin Li, HaiMeng Li, Tero Raita, Ye Pang   +9 more
openaire   +1 more source

Enhanced Solar Wind Dynamic Pressure as a Driver of Low‐Energy Proton Temperature Anisotropies and High‐Frequency EMIC Waves

Journal of Geophysical Research: Space Physics, 2023
Typical and high‐frequency electromagnetic ion cyclotron (EMIC) waves were simultaneously registered by satellites in the afternoon sector of the inner magnetosphere during enhanced solar wind dynamic pressure (Pdyn) on 3 November 2015.
Zuxiang Xue, Z. Yuan, Xiongdong Yu, Zheng Huang, D. Deng   +4 more
semanticscholar   +1 more source

Fine Structure of Relativistic Electron Precipitation Driven by EMIC Waves: CIRBE/REPTile‐2 Measurements and Physical Implications

Geophysical Research Letters
Electromagnetic ion cyclotron (EMIC) waves are commonly observed electromagnetic emissions in Earth's magnetosphere and are widely considered to efficiently scatter relativistic electrons into bounce loss cones.
Zheng Xiang, Xinlin Li, D. Baker, T. Sarris, Hong Zhao, D. O’Brien, Y. Mei, M. Temerin   +7 more
semanticscholar   +1 more source

Understanding Quiet and Storm Time EMIC Waves—Van Allen Probes Results

Journal of Geophysical Research: Space Physics, 2023
Geomagnetic indices have been used as a proxy for studying electromagnetic ion cyclotron (EMIC) wave occurrences under different geomagnetic conditions.
B. Remya, A. Halford, D. Sibeck, K. Murphy, M. Fok   +4 more
semanticscholar   +1 more source

Characteristics of Energy‐Latitude Dispersed Electron Precipitation Driven by EMIC Waves

Journal of Geophysical Research: Space Physics
The resonant interaction of relativistic electrons and electromagnetic ion cyclotron (EMIC) waves significantly contributes to electron depletion in the outer radiation belts, resulting in their precipitation into Earth's atmosphere.
Ruoxian Zhou, Xiaojia Zhang, A. Artemyev, D. Mourenas, V. Angelopoulos   +4 more
semanticscholar   +1 more source

Parametric Study of Asymmetric Propagation of Guided and Unguided EMIC Waves Near the Local Characteristic Frequencies

Journal of Geophysical Research: Space Physics
Previous studies demonstrate that the propagation of the guided and unguided electromagnetic ion cyclotron (EMIC) waves near the local characteristic frequencies in a dipole field shows prominent asymmetry with the wave vector k $\mathbf{k}$ pointing ...
Xiang Xu, Chen Zhou
semanticscholar   +1 more source

Prediction of the Wave Normal Angle of Proton‐Band EMIC Waves Near Geosynchronous Orbit

Journal of Geophysical Research: Space Physics
We investigate how the wave normal angle (WNA) and polarization of proton‐band electromagnetic ion cyclotron (EMIC) waves change as they travel from their source to Earth.
Eun‐Hwa Kim, Khan‐Hyuk Kim, Jay R. Johnson, P. Damiano, Syun’ichi Shiraiwa, Yu Lin, W. Martin   +6 more
semanticscholar   +1 more source

Analysis of Conjugate Satellite and Ground EMIC Wave Observations

2021 USNC-URSI Radio Science Meeting (USCN-URSI RSM), 2021
Electromagnetic ion cyclotron (EMIC) waves are transverse electromagnetic waves typically generated in the equatorial magnetosphere by anisotropic proton distributions. These waves can resonantly interact with multiple particle populations in the inner magnetosphere believed to be an important loss mechanism for both ring current ions and radiation ...
M. E. Usanova, L. W. Blum
openaire   +1 more source

Observations of Two‐Layers Spectrum Formed by Simultaneous H+ and He+ Anomalous Resonance With EMIC Waves

Geophysical Research Letters
In collisionless plasma environments, wave‐particle interactions facilitate efficient energy exchange between particles and phase‐coherent waves.
Heng Zhang, Kang Zhou, Bin‐Wen Ge, Zi‐Hao Guo, B. Tang, Wenya Li, Chongle Zhang, Qing‐he Zhang   +7 more
semanticscholar   +1 more source